Since it's almost Easter Sunday, I will be sharing with you several cool virtual Easter eggs hidden inside some of our favorite software applications. Today, we will take a look at some Easter eggs inside OpenOffice.org so get ready to have fun or be amused.

OppenOffice.org Calc has a few hidden games inside. You can try them by opening a new Calc spreadsheet, and then entering some characters into a cell.

To play Space Invaders, enter =GAME("StarWars") into any cell and press the ENTER key. It you have closed the game and you try to play it again, the message "oh no, not again" will appear. You can play again by restarting OpenOffice.org Calc.

The instructions are in German but you don’t have to understand them to start playing Space Invaders. Use the Spacebar key to shoot and the left-right arrow keys to move.

The graphics is not pretty but the game can still be fun to play and can be a nice break after long hours of staring at numbers.

To play Tic-Tac-Toe, enter =GAME(A2:C4;"TicTacToe") formula into A1 and press the ENTER key.

There are also other interesting OppenOffice.org Calc Easter eggs, like when you put =ANTWORT("Das Leben, das Universum und der ganze Rest") into any cell and pressed the ENTER key, the result is the famous number 42 from the Hitchhiker's Guide to the Galaxy.

You can also check out a photo of StarCalc developer team getting drunk by entering =STARCALCTEAM() into any cell, and then pressing ENTER.

OppenOffice.org Writer has also a few Easter eggs:

To view a photo of the StarWriter developer team, enter the word StarWriterTeam into a Writer document, and then press F3.

To view a picture of the GoOOTeam developer team, enter the word GoOOTeam into a Writer document, and then press F3.